21411221203 has 8 divisors (see below), whose sum is σ = 22344487200. Its totient is φ = 20478150528.

The previous prime is 21411221177. The next prime is 21411221231. The reversal of 21411221203 is 30212211412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21411221203 - 2¹³ = 21411213011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21411221603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202843 + ... + 289771.

It is an arithmetic number, because the mean of its divisors is an integer number (2793060900).

Almost surely, 2^21411221203 is an apocalyptic number.

21411221203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21411221203 is a deficient number, since it is larger than the sum of its proper divisors (933265997).

21411221203 is a wasteful number, since it uses less digits than its factorization.

21411221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97661.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21411221203 its reverse (30212211412), we get a palindrome (51623432615).

The spelling of 21411221203 in words is "twenty-one billion, four hundred eleven million, two hundred twenty-one thousand, two hundred three".